Fixed some problems, indentation and Pointer

codes/python/chapter_hashing/array_hash_map.py

@@ -4,25 +4,25 @@ Created Time: 2022-12-14
 Author: msk397 (machangxinq@gmail.com)
 """
 
-# 键值对 int->String
+""" 键值对 int->String """
 class Entry:
     def __init__(self, key, val):
         self.key = key
         self.val = val
 
 
-# 基于数组简易实现的哈希表
+""" 基于数组简易实现的哈希表 """
 class ArrayHashMap:
     def __init__(self):
         # 初始化一个长度为 100 的桶（数组）
         self.bucket = [None] * 100
 
-    # 哈希函数
+    """ 哈希函数 """
     def hashFunc(self, key):
         index = key % 100
         return index
 
-    # 查询操作
+    """ 查询操作 """
     def get(self, key):
         index = self.hashFunc(key)
         pair = self.bucket[index]
@@ -30,19 +30,19 @@ class ArrayHashMap:
             return None
         return pair.val
 
-    # 添加操作
+    """ 添加操作 """
     def put(self, key, val):
         pair = Entry(key, val)
         index = self.hashFunc(key)
         self.bucket[index] = pair
 
-    # 删除操作
+    """ 删除操作 """
     def remove(self, key):
         index = self.hashFunc(key)
         # 置为空字符，代表删除
         self.bucket[index] = None
 
-    # 获取所有键值对
+    """ 获取所有键值对 """
     def entrySet(self):
         result = []
         for pair in self.bucket:
@@ -50,7 +50,7 @@ class ArrayHashMap:
                 result.append(pair)
         return result
 
-    # 获取所有键
+    """ 获取所有键 """
     def keySet(self):
         result = []
         for pair in self.bucket:
@@ -58,7 +58,7 @@ class ArrayHashMap:
                 result.append(pair.key)
         return result
 
-    # 获取所有值
+    """ 获取所有值 """
     def valueSet(self):
         result = []
         for pair in self.bucket:
@@ -66,7 +66,7 @@ class ArrayHashMap:
                 result.append(pair.val)
         return result
 
-    # 打印哈希表
+    """ 打印哈希表 """
     def print(self):
         for pair in self.bucket:
             if pair is not None:
@@ -75,38 +75,38 @@ class ArrayHashMap:
 
 if __name__ == "__main__":
     """ 初始化哈希表 """
-    Map = ArrayHashMap()
+    mapp = ArrayHashMap()
 
     """ 添加操作 """
     # 在哈希表中添加键值对 (key, value)
-    Map.put(12836, "小哈")
-    Map.put(15937, "小啰")
-    Map.put(16750, "小算")
-    Map.put(13276, "小法")
-    Map.put(10583, "小鸭")
+    mapp.put(12836, "小哈")
+    mapp.put(15937, "小啰")
+    mapp.put(16750, "小算")
+    mapp.put(13276, "小法")
+    mapp.put(10583, "小鸭")
     print("\n添加完成后，哈希表为\nKey -> Value")
-    Map.print()
+    mapp.print()
 
     """ 查询操作 """
     # 向哈希表输入键 key ，得到值 value
-    name = Map.get(15937)
+    name = mapp.get(15937)
     print("\n输入学号 15937 ，查询到姓名 " + name)
 
     """ 删除操作 """
     # 在哈希表中删除键值对 (key, value)
-    Map.remove(10583)
+    mapp.remove(10583)
     print("\n删除 10583 后，哈希表为\nKey -> Value")
-    Map.print()
+    mapp.print()
 
     """ 遍历哈希表 """
     print("\n遍历键值对 Key->Value")
-    for pair in Map.entrySet():
+    for pair in mapp.entrySet():
         print(pair.key, "->", pair.val)
 
     print("\n单独遍历键 Key")
-    for key in Map.keySet():
+    for key in mapp.keySet():
         print(key)
 
     print("\n单独遍历值 Value")
-    for val in Map.valueSet():
-        print(val)
+    for val in mapp.valueSet():
+        print(val)

codes/python/chapter_hashing/hash_map.py

@@ -4,43 +4,44 @@ Created Time: 2022-12-14
 Author: msk397 (machangxinq@gmail.com)
 """
 
+import sys, os.path as osp
+sys.path.append(osp.dirname(osp.dirname(osp.abspath(__file__))))
+from include import *
+
 if __name__ == "__main__":
     """ 初始化哈希表 """
-    Map = {}
+    mapp = {}
 
     """ 添加操作 """
     # 在哈希表中添加键值对 (key, value)
-    Map[12836] = "小哈"
-    Map[15937] = "小啰"
-    Map[16750] = "小算"
-    Map[13276] = "小法"
-    Map[10583] = "小鸭"
+    mapp[12836] = "小哈"
+    mapp[15937] = "小啰"
+    mapp[16750] = "小算"
+    mapp[13276] = "小法"
+    mapp[10583] = "小鸭"
     print("\n添加完成后，哈希表为\nKey -> Value")
-    for key, value in Map.items():
-        print(key, "->", value)
+    print_dict(mapp)
 
     """ 查询操作 """
     # 向哈希表输入键 key ，得到值 value
-    name = Map[15937]
+    name = mapp[15937]
     print("\n输入学号 15937 ，查询到姓名 " + name)
 
     """ 删除操作 """
     # 在哈希表中删除键值对 (key, value)
-    Map.pop(10583)
+    mapp.pop(10583)
     print("\n删除 10583 后，哈希表为\nKey -> Value")
-    for key, value in Map.items():
-        print(key, "->", value)
+    print_dict(mapp)
 
     """ 遍历哈希表 """
     print("\n遍历键值对 Key->Value")
-    for key, value in Map.items():
+    for key, value in mapp.items():
         print(key, "->", value)
 
     print("\n单独遍历键 Key")
-    for key in Map.keys():
+    for key in mapp.keys():
         print(key)
 
     print("\n单独遍历值 Value")
-    for val in Map.values():
-        print(val)
-
+    for val in mapp.values():
+        print(val)

codes/python/include/__init__.py

@@ -7,4 +7,4 @@ import collections
 from typing import List
 from .linked_list import ListNode, list_to_linked_list, linked_list_to_list, get_list_node
 from .binary_tree import TreeNode, list_to_tree, tree_to_list, get_tree_node
-from .print_util import print_matrix, print_linked_list, print_tree
+from .print_util import print_matrix, print_linked_list, print_tree, print_dict

codes/python/include/print_util.py

@@ -1,7 +1,7 @@
 '''
 File: print_util.py
 Created Time: 2021-12-11
-Author: Krahets (krahets@163.com)
+Author: Krahets (krahets@163.com), msk397 (machangxinq@gmail.com)
 '''
 
 import copy
@@ -72,3 +72,12 @@ def print_tree(root, prev=None, isLeft=False):
         prev.str = prev_str
     trunk.str = '   |'
     print_tree(root.left, trunk, False)
+
+def print_dict(d):
+    """Print a dict
+
+    Args:
+        d ([type]): [description]
+    """
+    for key, value in d.items():
+        print(key, '->', value)